I am currently building a fully loaded designer/show stretch cruiser/chopper bike, and I need some advice on material to build the frame. I am currently thinking of using T6 aluminum or 4130 steel. I would like to save on weight so I am leaning toward the Al. I am an experienced welder so I am aware of the process needed for the T6. Although the bike is intended for show, I would also like it to be of course functional for standard city riding. I am not too familiar with T6 structural properties (for use on a bike) so, my only concern is choosing the appropriate diameter and wall thickness for the tubing to make the frame structurally sound. If there is anyone out there that has any experience in T6 frame building or someone who could point me in the proper direction (or talk me out of using T6, and why) your advice would be greatly appreciated.
Here are a few of the general specs.
Overall length (wheel to wheel) = approx. 9.5'
Frame length (head tube to rear dropout) = approx. 6'
Fork length = approx. 38"
Fork angle = 45 degrees
Head tube = 10"
Thanks to anyone that can help.